Pet shelter



FIG. 1 is a front-right side perspective view of a first embodiment of a pet shelter according to our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

The broken lines used in illustrating the pet shelter are for illustrative purposes only to show environmental structure that forms no part of the claimed design. 

The ornamental design for a pet shelter, as shown and described. 